gopls/internal/cache: set GO111MODULE=on for go.work view

[koct9i]

GO111MODULE=auto disables modules when go tool sees only go.work file.

$ go version
go version go1.23.1 linux/amd64
$ echo 'go 1.24' > go.work
$ go version
go version go1.24.0 linux/amd64
$ GO111MODULE=auto go version
go version go1.23.1 linux/amd64

When go in $PATH is too old this breaks gopls for repositories like this:
https://github.com/containers/container-libs/

Fixes: golang/go#76728

[koct9i]

Original issues looks like this

~/src/containers/container-libs$ gopls -vv check pkg/lockfile/lockfile.go 
2025/11/26 12:16:14 Info:2025/11/26 12:16:14 Created View (#1)
	directory=/home/khlebnikov/src/containers/container-libs
	view_type="GoWork"
	root_dir="file:///home/khlebnikov/src/containers/container-libs"
	go_version="go version go1.24.2 linux/amd64"
	build_flags=[]
	env={GOOS:linux GOARCH:amd64 GOCACHE:/home/khlebnikov/.cache/go-build GOMODCACHE:/home/khlebnikov/go/pkg/mod GOPATH:/home/khlebnikov/go GOPRIVATE: GOFLAGS: GO111MODULE: GOTOOLCHAIN:auto GOROOT:/home/khlebnikov/go/pkg/mod/golang.org/toolchain@v0.0.1-go1.24.2.linux-amd64 GoVersion:23 GoVersionOutput:go version go1.24.2 linux/amd64
 ExplicitGOWORK: EffectiveGOPACKAGESDRIVER:}
	env_overlay=[]
2025/11/26 12:16:14 Info:2025/11/26 12:16:14 starting GOROOT= GOPATH= GO111MODULE=auto GOPROXY= PWD=/home/khlebnikov/src/containers/container-libs go list -f "{{context.GOARCH}} {{context.Compiler}}" -- unsafe
2025/11/26 12:16:14 Info:2025/11/26 12:16:14 starting GOROOT= GOPATH= GO111MODULE=off GOPROXY= PWD=/home/khlebnikov/src/containers/container-libs go list -e -f {{context.ReleaseTags}} -- unsafe
2025/11/26 12:16:14 Info:2025/11/26 12:16:14 6.292977ms for GOROOT= GOPATH= GO111MODULE=auto GOPROXY= PWD=/home/khlebnikov/src/containers/container-libs go list -f "{{context.GOARCH}} {{context.Compiler}}" -- unsafe
2025/11/26 12:16:14 Info:2025/11/26 12:16:14 6.58512ms for GOROOT= GOPATH= GO111MODULE=off GOPROXY= PWD=/home/khlebnikov/src/containers/container-libs go list -e -f {{context.ReleaseTags}} -- unsafe
2025/11/26 12:16:14 Info:2025/11/26 12:16:14 starting GOROOT= GOPATH= GO111MODULE=auto GOPROXY= PWD=/home/khlebnikov/src/containers/container-libs go list -e -json=Name,ImportPath,Error,Dir,GoFiles,IgnoredGoFiles,IgnoredOtherFiles,CFiles,CgoFiles,CXXFiles,MFiles,HFiles,FFiles,SFiles,SwigFiles,SwigCXXFiles,SysoFiles,TestGoFiles,XTestGoFiles,CompiledGoFiles,Export,DepOnly,Imports,ImportMap,TestImports,XTestImports,ForTest,DepsErrors,Module,EmbedFiles -compiled=true -test=true -export=false -deps=true -find=false -pgo=off -- /home/khlebnikov/src/containers/container-libs/common/... /home/khlebnikov/src/containers/container-libs/image/... /home/khlebnikov/src/containers/container-libs/storage/... builtin
2025/11/26 12:16:14 Info:2025/11/26 12:16:14 6.392822ms for GOROOT= GOPATH= GO111MODULE=auto GOPROXY= PWD=/home/khlebnikov/src/containers/container-libs go list -e -json=Name,ImportPath,Error,Dir,GoFiles,IgnoredGoFiles,IgnoredOtherFiles,CFiles,CgoFiles,CXXFiles,MFiles,HFiles,FFiles,SFiles,SwigFiles,SwigCXXFiles,SysoFiles,TestGoFiles,XTestGoFiles,CompiledGoFiles,Export,DepOnly,Imports,ImportMap,TestImports,XTestImports,ForTest,DepsErrors,Module,EmbedFiles -compiled=true -test=true -export=false -deps=true -find=false -pgo=off -- /home/khlebnikov/src/containers/container-libs/common/... /home/khlebnikov/src/containers/container-libs/image/... /home/khlebnikov/src/containers/container-libs/storage/... builtin
2025/11/26 12:16:14 Error:2025/11/26 12:16:14 go/packages.Load #1: err: exit status 1: stderr: go: go.work requires go >= 1.24.2 (running go 1.23.1)

	view_id="1"
	snapshot=0
	directory=/home/khlebnikov/src/containers/container-libs
	query=[/home/khlebnikov/src/containers/container-libs/common/... /home/khlebnikov/src/containers/container-libs/image/... /home/khlebnikov/src/containers/container-libs/storage/... builtin]
	packages=0
	duration=13.869724ms
2025/11/26 12:16:14 Error:2025/11/26 12:16:14 initial workspace load failed: packages.Load error: err: exit status 1: stderr: go: go.work requires go >= 1.24.2 (running go 1.23.1)

gopls: getFile: file:///home/khlebnikov/src/containers/container-libs/pkg/lockfile/lockfile.go: open /home/khlebnikov/src/containers/container-libs/pkg/lockfile/lockfile.go: no such file or directory

[gopherbot]

This PR (HEAD: 30741a5) has been imported to Gerrit for code review.

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[gopherbot]

Message from Gopher Robot:

Patch Set 1:

(1 comment)

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Please don’t reply on this GitHub thread. Visit golang.org/cl/724262.
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[gopherbot]

Message from Gopher Robot:

Patch Set 1:

Congratulations on opening your first change. Thank you for your contribution!

Next steps:
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[gopherbot]

Message from Konstantin Khlebnikov:

Patch Set 1:

(1 comment)

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After addressing review feedback, remember to publish your drafts!